square antenna

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square antenna

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Antennas : 2M
  • Squarooka Antenna - squared bazooka for 2 meters band - Sort of similar to the one of the 6m omni. Instead of using twin-lead, this design makes use of a more or less regular double bazooka antenna (coaxial dipole). Your attention shall be drawn to the available standart literature, such as Rothammel. In order to "compute" the dimension, Karl Rothammel mentioned that the total length of the dipole shall be 95% of the free-space wavelength. The short-circuit bridges (closing the folded dipole) are to be placed at a distance-fraction being equal to the velocity factor of the coax cable used, which will be 66% using RG-58 or RG174.
    [ Hits: 353 | Votes: 0 | Rating: 0 ]
  • 2m Quad Turnstile Antenna - The loops are made of 10 mm round aluminum tube. No bending pliers was used to gently bend 90 degrees to obtain a square with 53 cm inner sides. Each loop has an impedance of approximately 100 Ohm. To connect both radiators in phase, a quarter wave long feeder of 100 Ohm is required.
    [ Hits: 207 | Votes: 0 | Rating: 0 ]
  • VHF Bi-Square Beam Antenna - 2 Wavelength ,2 Meter Bi-Square Beam , 5dbd gain. This antennas are very cheeap to build and their radiation pattern is similar to a figure 8 with maximum signal through the loop but they may be used as a near-omnidirectional antenna
    [ Hits: 185 | Votes: 2 | Rating: 9 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 6 Elements Yagi Antenna on 50 MHz - This is a design based on the QuickYagi 4 software by WA7RAI with some changes for practical reasons. The beam uses 6.5 metres of standard 25mm square boom, 12mm diameter elements without tapers. The actual boom length used is 6.3 metres and all parts are readily available.
    [ Hits: 131 | Votes: 2 | Rating: 6 ]
  • 6el LFA Yagi for 50MHz - This six element LFA Yagi for six meters has a 1.5 inch square boom with a 1.5 inch secondary boom beneath the first. This ensures the 7.3 metre long boom will not sag and will not require any guying. This antenna has 12.3 dBi Gain and just over 23dB F/B.
    [ Hits: 117 | Votes: 2 | Rating: 4 ]
Antennas : Antenna Calculators
  • The Antenna Torque Calculator - This unique online tool helps Ham Radio operators to choose the right rotator for medium and large HF antenna systems. The algorithm implemented in this calculator is the result of 40 years of experience in the HF Antenna sector. Given the Wind Speed, the total antenna square area, and the boom length, it will return the calculated torque value.
    [ Hits: 178 | Votes: 1 | Rating: 1 ]
Antennas : Four Square
  • 4 Square K9AY Antenna - 4 Square K9AY Array project for 80 and 40 meters band
    [ Hits: 555 | Votes: 0 | Rating: 0 ]
  • 4 Square Antenna Experiences - Article on foru-square antennas by Jack Schuster, W1WEF and and Tom Frenaye, K1KI appeared on National Contest Journal december 1996
    [ Hits: 899 | Votes: 0 | Rating: 0 ]
Antennas : Halo
  • Halo Antenna for 50 MHz - The antenna described in this article is for 50 MHz, but the design can be scaled for any band, including VHF, UHF, or even the higher HF bands. The antenna is nothing more than a square loop of wire, approximately 30" (or ~76cm) per side. The loop is fed in the middle of one side, and the opposite side to the feed point has a gap in it.
    [ Hits: 292 | Votes: 0 | Rating: 0 ]
  • Square Halo Antenna for 10 and 20 Meters - How to build a limited space 10 and 20 meter band Square Halo DX antenna. A horizontally polarized antenna for 10 and 20 meter band, which is suitable for a limited space.
    [ Hits: 239 | Votes: 1 | Rating: 9 ]
Antennas : Magnetic Loop
  • Magnetic Loop Antenna Builds and Autotuning Advancements - Explore two magnetic loop antenna constructions, utilizing a 6-foot and a 12-foot square loop. Accompanied by a detailed description, the 6-foot loop features a built-in stepper motor control circuit, while the 12-foot loop incorporates a separate loop controller. Efficiency, tuning ranges, and the innovative autotuning solution using a microcontroller are discussed, offering insights into overcoming the antenna's narrowband limitations.
    [ Hits: 66 | Votes: 0 | Rating: 0 ]
Antennas : Masts and mounts
  • Drive-On Antenna Mast For POTA - This antenna mast mount uses two Reese hitch extensions that are welded on to a piece of 2 inch square tube. It comes apart in two pieces. The vertical pipe on the left is welded on to a 2 inch piece of square tube that fits into the Reese hitch extension.
    [ Hits: 151 | Votes: 1 | Rating: 9 ]
Antennas : Portable
  • Portable Half-Square Antenna: - The author explores a portable version of the half-square antenna, typically a single-band structure. Using a 9:1 unun for versatility, they describe construction with speaker wire, deployment using collapsible poles, and field tests, achieving successful contacts on multiple bands. The article suggests efficient matching methods and concludes with the antenna's integration into the author's portable options.
    [ Hits: 120 | Votes: 0 | Rating: 0 ]
Antennas : Receiving
  • 160 Meters 4 Square Receive Antenna - A four square array receiving antena for the top band, performance is extremely directional and space requirements are really hard to fulfill.
    [ Hits: 179 | Votes: 1 | Rating: 10 ]
  • RX Loop antenna - This loop antenna is intended to be connected as an antenna for receivers that do not have a built-in antenna such as an HF set or an old tube radio. This square barrel is wound on a wooden frame. It consists of two windings that are galvanically isolated from each other, a main and a coupling winding. The diameter is about 40 cm.
    [ Hits: 60 | Votes: 0 | Rating: 0 ]
Antennas : VHF UHF
  • Double Quad Antenna for VHF UHF - The structure of this dual band VHF UHF antenna is very simple. It consists of two identical square loops, whose sides measure a quarter wave, connected together at the ends. A project by I5NZR
    [ Hits: 247 | Votes: 6 | Rating: 6.33 ]
Manufacturers : Antenna Switches
  • NMF Technology - Amateur radio antenna accesories manufacturer, produces four square antenna combiner, antenna controllers, antenna stack match and antenna switches
    [ Hits: 153 | Votes: 2 | Rating: 10 ]
Manufacturers : Antennas : HF : Vertical Antennas
  • DX Commander Antennas - DX Commander produces economical multi-band antennas available in kit form. 4 Square array vertical antennas, vertical multiband antennas, sota and travel antennas
    [ Hits: 273 | Votes: 0 | Rating: 0 ]
Manufacturers : Test Equipment
  • SWR ANTENNA ANALYZER + WSPR TX - Available worldwide can be used as Arduino Shield or plug it in to you PC , or with a bluetooth adapter connect to Android. With a highly optimized software, KAI200 brings you: a. Antenna analyzer form 1 up to 200 Mhz; b. WSPR transmiter (set up by serial terminal); c. Square Wave Signal generator KAI200 is all you need for your radio whatever it is Yaesu, Icom, Kenwood or Drake and DIY projects.
    [ Hits: 321 | Votes: 8 | Rating: 9.62 ]

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